#include <stdio.h>

int main(void)
{
    int pooh = 1;
    printf("pooh : %d \n", pooh);
    int *ptr = &pooh;
    printf("&pooh : %d \n", *ptr);
    printf("======================== \n");
    *ptr = 3;
    printf("pooh : %d \n", pooh);
    printf("&pooh : %d \n", *ptr);
    return 0;
}
